MORTAR. SHELLS1ROPPED IN IWOFROM AIRLINERS7th AAP Base in the Marianos, March 3. (Delayed)—(Via Navy Radio) — (AP Capt Frederick Wilkes of Athens, Ga., piloted the first of!Sen 047 converted airliners which dropped £,300 pounds of mortar shells by parapack to *»nrir*s on Iwo Jima today in :hf» largest delivery of that kindVvet made by troon carrier 'planes j | in the central Pacific.. j Th Japanese attempted umuc-. j cessfully to interfere with the de-’ | livery by keeping the landing strip)u~er fire. Ja1